<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        article{
            width: 800px;
            height: 300px;
            background-color: sandybrown;
            margin: 0 auto;
        }
        article div.left{
            width: 100px;
            height: 300px;
            background-color: slategray;
            float: left;
        }
        article div.right{
            width: 100px;
            height: 300px;
            background-color: turquoise;
            float: right;
        }
        article div.center{
            height: 300px;
            background-color: yellow;
            margin-left: 100px;
            margin-right: 100px;
        }
        p{
            width: 100px;
            height: 200px;
            background-color: violet;
        }
    </style>
</head>
<body>
    <article>
        <div class="left"></div>
        <div class="right"></div>
        <div class="center">
            <p></p>
        </div>
        
    </article>
</body>
</html>